package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.aliyun.oss.common.utils.HttpUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * ClassName: UserServiceImpl
 * Package: IntelliJ IDEA
 *
 * @author 张文豪
 * @description
 * @date 2023/8/17 12:17
 */
@Service
public class UserServiceImpl implements UserService {
    public static final String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private  WeChatProperties WeChatProperties;
    @Autowired
    private UserMapper userMapper;
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {
        String openid = openid(userLoginDTO.getCode());
        //判断openid是否为空
        if(openid == null){
            throw new LoginFailedException(MessageConstant.UNKNOWN_ERROR);
        }
        //判断是否是新用户
        QueryWrapper<User> qw = new QueryWrapper<>();
        qw.lambda().eq(User::getOpenid,openid);
        User user = userMapper.selectOne(qw);
        //如果是新用户添加到表种
        if(user == null){
            user = User.builder().openid(openid).createTime(LocalDateTime.now()).build();
            userMapper.insert(user);
        }
        return user;
    }
    private String openid (String code) {
        //调用微信接口服务，获取openid
        Map<String,String> map = new HashMap<>();
        map.put("appid",WeChatProperties.getAppid());
        map.put("secret",WeChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, map);
        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");
        return openid;
    }

}
